Article(id=1221507470845988961, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221507468635586855, articleNumber=null, orderNo=null, doi=10.19666/j.rlfd.202012195, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1670774400000, receivedDateStr=2022-12-12, revisedDate=null, revisedDateStr=null, acceptedDate=null, acceptedDateStr=null, onlineDate=1769159675560, onlineDateStr=2026-01-23, pubDate=1687622400000, pubDateStr=2023-06-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1769159675560, onlineIssueDateStr=2026-01-23, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1769159675560, creator=13701087609, updateTime=1769159675560, updator=13701087609, issue=Issue{id=1221507468635586855, tenantId=1146029695717560320, journalId=1210938733613449225, year='2023', volume='52', issue='6', pageStart='1', pageEnd='172', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1769159675034, creator=13701087609, updateTime=1769166411362, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1221535722931216843, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221507468635586855, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1221535722931216844, tenantId=1146029695717560320, journalId=1210938733613449225, issueId=1221507468635586855, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=146, endPage=156, ext={EN=ArticleExt(id=1221507471135395940, articleId=1221507470845988961, tenantId=1146029695717560320, journalId=1210938733613449225, language=EN, title=Numerical investigations on the coupled heat transfer characteristics of the cooling system of a supercritical carbon dioxide axial turbine, columnId=1221507471064092771, journalTitle=Thermal Power Generation, columnName=Equipments research on S-CO2 cycle power generation system, runingTitle=null, highlight=null, articleAbstract=

A cooling system was designed for a supercritical carbon dioxide (S-CO2) axial turbine. The dry gas seal, shaft and casing were cooled by extracting the low temperature S-CO2 in the pipeline behind the compressor to ensure that the dry gas seal operating temperature was below 200 ℃. The flow and heat transfer characteristics of the cooling system were analyzed using the coupled heat transfer method, and the temperature distributions of solid domains such dry gas seal, shaft and casing of different cooling schemes were compared. The research shows that the temperature drop of the shaft reaches 220.3 ℃ when theshaft cooling scheme is adopted, and the maximum temperature of the dry gas seal is 229.1 ℃. Further introduction of S-CO2 with lower temperature and larger flow rate to cool the casing can inhibit the heating effect of the high temperature mainstream at the turbine inlet. The temperature drop of the shaft increases to 244.1 ℃, and the maximum temperature of the dry gas seal decreases to 181.2 ℃. Meanwhile, the reasonable temperature gradient of the cooled domains such as the dry gas seal, shaft and casing is achieved. The cooling system designed in this paper provides a solution for the safe and reliable operation of S-CO2 axial turbines.

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针对某型超临界二氧化碳(S-CO2)轴流透平开展了冷却系统设计,通过抽取压缩机后管道中低温S-CO2对干气密封、转轴和壳体进行冷却,以保证干气密封工作温度低于200.0 ℃。采用耦合传热方法分析了该冷却系统的流动和传热特性,对比了不同冷却方案的干气密封、转轴与壳体等固体域的温度分布。结果表明:采用转轴冷却方案时转轴温度降幅达到220.3 ℃,干气密封最高温度为229.1 ℃;进一步引入温度更低流量更大的S-CO2对壳体进行冷却,能抑制透平进口处高温主流的加热作用,转轴温度降幅增加到244.1 ℃,干气密封最高温度下降到181.2 ℃,同时S-CO2轴流透平干气密封、壳体和转轴等被冷却部件温度梯度可控。该冷却系统为S-CO2轴流透平的安全可靠运行提供了解决方案。

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周东(1982),男,硕士,研究员级高级工程师,主要研究方向为叶轮机械流体力学,

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周东(1982),男,硕士,研究员级高级工程师,主要研究方向为叶轮机械流体力学,

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周东(1982),男,硕士,研究员级高级工程师,主要研究方向为叶轮机械流体力学,

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超临界二氧化碳轴流透平冷却系统耦合传热特性数值研究
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周东 1, 2 , 霍文浩 1, 3 , 刘红丹 1, 2 , 唐国庆 1 , 王亚 1 , 文鑫 1, 3 , 但光局 1
热力发电 | 超临界二氧化碳循环发电系统设备研究 2023,52(6): 146-156
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热力发电 | 超临界二氧化碳循环发电系统设备研究 2023, 52(6): 146-156
超临界二氧化碳轴流透平冷却系统耦合传热特性数值研究
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周东1, 2 , 霍文浩1, 3, 刘红丹1, 2, 唐国庆1, 王亚1, 文鑫1, 3, 但光局1
作者信息
  • 1.重庆江增船舶重工有限公司,重庆 402263
  • 2.船舶与海洋工程特种装备和动力系统国家工程研究中心,上海 201108
  • 3.船用涡轮增压器研发重庆市工业和信息化重点实验室,重庆 402263
  • 周东(1982),男,硕士,研究员级高级工程师,主要研究方向为叶轮机械流体力学,

Numerical investigations on the coupled heat transfer characteristics of the cooling system of a supercritical carbon dioxide axial turbine
Dong ZHOU1, 2 , Wenhao HUO1, 3, Hongdan LIU1, 2, Guoqing TANG1, Ya WANG1, Xin WEN1, 3, Guangju DAN1
Affiliations
  • 1.Chongqing Jiangjin Shipbuilding Industry Co., Ltd., Chongqing 402263, China
  • 2.National Engineering Research Center of Special Equipment and Power System for Ship and Marine Engineering, Shanghai 201108, China
  • 3.Key Laboratory of Marine Turbocharger Research, Chongqing Industry and Information Technology, Chongqing 402263, China
出版时间: 2023-06-25 doi: 10.19666/j.rlfd.202012195
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针对某型超临界二氧化碳(S-CO2)轴流透平开展了冷却系统设计,通过抽取压缩机后管道中低温S-CO2对干气密封、转轴和壳体进行冷却,以保证干气密封工作温度低于200.0 ℃。采用耦合传热方法分析了该冷却系统的流动和传热特性,对比了不同冷却方案的干气密封、转轴与壳体等固体域的温度分布。结果表明:采用转轴冷却方案时转轴温度降幅达到220.3 ℃,干气密封最高温度为229.1 ℃;进一步引入温度更低流量更大的S-CO2对壳体进行冷却,能抑制透平进口处高温主流的加热作用,转轴温度降幅增加到244.1 ℃,干气密封最高温度下降到181.2 ℃,同时S-CO2轴流透平干气密封、壳体和转轴等被冷却部件温度梯度可控。该冷却系统为S-CO2轴流透平的安全可靠运行提供了解决方案。

超临界二氧化碳轴流透平  /  冷却系统  /  传热特性  /  温度分布

A cooling system was designed for a supercritical carbon dioxide (S-CO2) axial turbine. The dry gas seal, shaft and casing were cooled by extracting the low temperature S-CO2 in the pipeline behind the compressor to ensure that the dry gas seal operating temperature was below 200 ℃. The flow and heat transfer characteristics of the cooling system were analyzed using the coupled heat transfer method, and the temperature distributions of solid domains such dry gas seal, shaft and casing of different cooling schemes were compared. The research shows that the temperature drop of the shaft reaches 220.3 ℃ when theshaft cooling scheme is adopted, and the maximum temperature of the dry gas seal is 229.1 ℃. Further introduction of S-CO2 with lower temperature and larger flow rate to cool the casing can inhibit the heating effect of the high temperature mainstream at the turbine inlet. The temperature drop of the shaft increases to 244.1 ℃, and the maximum temperature of the dry gas seal decreases to 181.2 ℃. Meanwhile, the reasonable temperature gradient of the cooled domains such as the dry gas seal, shaft and casing is achieved. The cooling system designed in this paper provides a solution for the safe and reliable operation of S-CO2 axial turbines.

supercritical carbon dioxide axial turbine  /  cooling system  /  heat transfer characteristics  /  temperature distribution
周东, 霍文浩, 刘红丹, 唐国庆, 王亚, 文鑫, 但光局. 超临界二氧化碳轴流透平冷却系统耦合传热特性数值研究. 热力发电, 2023 , 52 (6) : 146 -156 . DOI: 10.19666/j.rlfd.202012195
Dong ZHOU, Wenhao HUO, Hongdan LIU, Guoqing TANG, Ya WANG, Xin WEN, Guangju DAN. Numerical investigations on the coupled heat transfer characteristics of the cooling system of a supercritical carbon dioxide axial turbine[J]. Thermal Power Generation, 2023 , 52 (6) : 146 -156 . DOI: 10.19666/j.rlfd.202012195
  • 国家重点研发计划项目(2018YFB1501004-4)
2023年第52卷第6期
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doi: 10.19666/j.rlfd.202012195
  • 接收时间:2022-12-12
  • 首发时间:2026-01-23
  • 出版时间:2023-06-25
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  • 收稿日期:2022-12-12
基金
The National Key Research and Development Program of China(2018YFB1501004-4)
国家重点研发计划项目(2018YFB1501004-4)
作者信息
    1.重庆江增船舶重工有限公司,重庆 402263
    2.船舶与海洋工程特种装备和动力系统国家工程研究中心,上海 201108
    3.船用涡轮增压器研发重庆市工业和信息化重点实验室,重庆 402263
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2种不同金属材料的力学参数

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genus
种数
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species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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